frictional prop

例句：

1. 1.The frictional prop is responsible for the smooth movement of the vehicle.
   摩擦式推进器负责车辆的平稳运行。
2. 2. The propeller is a crucial component of the aircraft's engine.
   螺旋桨是飞机引擎的关键部件。
3. 3. The frictional prop was designed to reduce the noise generated by the vehicle.
   摩擦式推进器的设计旨在减少车辆产生的噪音。